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200 1 $aIonospheric radio propagation$fKenneth Davies
210   $aNew York$cDover publications$d1966
215   $a470 p.$cill. 22 cm
225 1 $aDover books on engineering and engineering physics
610 0 $aPropagazione onde radio ionosferiche
676   $a621.384'11
700  1$aDavies,$bKenneth$027124
801  0$aIT$bUNINA$gRICA$2UNIMARC
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